873671563 has 2 divisors, whose sum is σ = 873671564. Its totient is φ = 873671562.

The previous prime is 873671551. The next prime is 873671569. The reversal of 873671563 is 365176378.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-873671563 is a prime.

It is not a weakly prime, because it can be changed into another prime (873671569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436835781 + 436835782.

It is an arithmetic number, because the mean of its divisors is an integer number (436835782).

Almost surely, 2^873671563 is an apocalyptic number.

873671563 is a deficient number, since it is larger than the sum of its proper divisors (1).

873671563 is an equidigital number, since it uses as much as digits as its factorization.

873671563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The square root of 873671563 is about 29557.9357026163. The cubic root of 873671563 is about 955.9813064948.

The spelling of 873671563 in words is "eight hundred seventy-three million, six hundred seventy-one thousand, five hundred sixty-three".